EP0077165B1 - Schleifgerät - Google Patents

Schleifgerät Download PDF

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Publication number
EP0077165B1
EP0077165B1 EP82305273A EP82305273A EP0077165B1 EP 0077165 B1 EP0077165 B1 EP 0077165B1 EP 82305273 A EP82305273 A EP 82305273A EP 82305273 A EP82305273 A EP 82305273A EP 0077165 B1 EP0077165 B1 EP 0077165B1
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EP
European Patent Office
Prior art keywords
abrasive
coated material
lengths
hub assembly
hub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82305273A
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English (en)
French (fr)
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EP0077165A1 (de
Inventor
John J. Mailand
Warren L. Langstraat
Daniel D. Smith
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3M Co
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Minnesota Mining and Manufacturing Co
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Publication date
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0077165A1 publication Critical patent/EP0077165A1/de
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Publication of EP0077165B1 publication Critical patent/EP0077165B1/de
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/003—Wheels having flaps of flexible abrasive material supported by a flexible material

Definitions

  • This invention relates to sanding wheels of the type adapted to sand both flat and irregular surfaces, which wheels store a reserve supply of abrasive-coated material in their hub assemblies.
  • type of sanding wheel comprises a hub assembly adapted for engagement by a drive motor to rotate it in a first direction, a plurality of flexible support members (typically in the form of bristle brushes) fixed in the hub assembly and projecting generally radially outwardly of its periphery, and a plurality of lengths of flexible abrasive-coated material, outer end portions of which extend through slots in the periphery of the hub assembly and project along the leading sides of the support members so that when the hub assembly is rotated the projecting portions of the abrasive-coated material are resiliently backed by the support members during application thereof to a surface to be sanded.
  • a plurality of flexible support members typically in the form of bristle brushes
  • Portions of the lengths of abrasive-coated material are also stored within the hub assembly and means are provided for releasably securing the lengths of abrasive-coated material within the hub assembly so that after the projecting portions of the abrasive-coated material become dull or wear away, the means for releasably securing can be temporarily released so that fresh portions of the lengths of abrasive-coated material can be pulled through the slots and positioned along the support members.
  • the lengths of abrasive-coated material either (1) each have one end permanently or releasably attached to a core, and the means for releasably securing the lengths of abrasive-coated material releasably locks the core in place within the hub assembly (see U.S. Patent No. 2,533,619); or (2) are separate nonconnected lengths of abrasive coated material which are stored in individual coils within the hub assembly with the means for releasably securing them located adjacent the periphery of the hub assembly (see U.S. Patent No. 1,986,005).
  • the cost of permanently attaching a plurality of lengths of abrasive-coated material to a core can add significantly to their cost. Adjusting the position of the core adjusts the position of all of the lengths of abrasive-coated material, which may not be necessary or desirable, and fairly large end portions of the lengths of abrasive-coated material extending from the core to the periphery of the wheel can never be used. Also, the wheels must be taken apart to reload with new abrasive-coated materials.
  • the use of separate and nonconnected lengths of abrasive coated material in individual coils affords individual adjustment of the lengths of abrasive and use of a large percentage of the abrasive material in the coils.
  • the hub assembly must still typically be at least partially disassembled to load a new length or coil of abrasive material.
  • the present invention provides a sanding wheel of the type described above which uses individual nonconnected lengths of abrasive-coated material held by means adjacent the periphery of the wheel which allows lengths of abrasive-coated material to be individually loaded into the wheel without taking the wheel apart.
  • a sanding wheel of the type comprising a hub assembly adapted to be engaged and rotated by a drive motor in a first direction; a plurality of flexible support members or brushes having one end fixed on the hub assembly and projecting generally radially outwardly of its periphery; and a plurality of lengths of separate nonconnected flexible abrasive-coated material each extending through a slot in the hub assembly and being positioned so that its outer end portion will project along the leading surface of one of the support members, and having an inner end portion releasably secured by means within the hub assembly located adjacent the periphery of the hub assembly.
  • the hub assembly defines separated passageways for the inner end portions of said lengths of abrasive-coated material, which passageways are interleaved with each other and are helically disposed about the axis of the hub so that, upon release of the means for releasably securing, the separate lengths of abrasive-coated material can not only be individually removed or repositioned but also new lengths of abrasive-coated material can be inserted into the separated helical passageways without disassembly of the hub.
  • the sanding wheel is adapted for use with lengths of abrasive-coated material having scalloped edges.
  • the hub assembly comprises first and second portions defining the separate passageways with each of the hub portions defining a different edge of each of the passageways adjacent its periphery.
  • the hub portions have lugs adjacent their periphery adapted to engage between the scallops along the edges of the lengths of abrasive-coated material along the passageway, and are relatively axially movable between a lock position with the lugs between scallops along the edges of the lengths of abrasive coated material to hold the lengths of abrasive-coated material in the hub assembly, and a released position spaced to afford free movement of the lengths of abrasive-coated material along the passageways past the lugs.
  • the sanding wheel comprises means for releasably holding the hub portions in the lock position which together with the scalloped edges, relatively movable hub portions, and the lugs provides the means for releasably securing the lengths of abrasive-coated material within the hub assembly.
  • the means for releasably securing the lengths of abrasive-coated material could be self-locking cams or spring- biased lock members (which lock members can pivotally support the support members) located adjacent the periphery of the hub assembly.
  • a sanding wheel adapted to sand irregular surfaces, said wheel being of the type comprising: a hub assembly having an axis, a periphery around said axis having a plurality of radially extending, circumferentially spaced slots and means adapted for engagement by a drive motor to afford rotation of said hub assembly about said axis in a first direction; a plurality of flexible support members having one end fixed on said hub assembly and projecting generally radially outwardly of said periphery with each of said support members being closely adjacent the side of one of the slots that trails when said hub assembly is rotated in said first direction; a plurality of lengths of flexible abrasive-coated material each extending through one of the slots having an outer projecting end portion projecting along the adjacent support member, and having an inner end portion within the hub assembly; and means for releasably securing the lengths of abrasive-coated material to said hub assembly, characterized by the feature that said
  • FIG. 1 a first embodiment of a sanding wheel according to the present invention generally designated by the reference numeral 10.
  • the sanding wheel 10 comprises a hub assembly 12 from which projects a distal end of a bolt 14 adapted to be engaged and rotated by a drive motor (not shown) to rotate the sanding wheel 10 in a first direction indicated by the arrow in Figure 1, and a plurality of flexible support members or brushes 16 each having one end fixed in the hub assembly 12 and projecting generally radially outwardly of its peripheral wall or periphery 17.
  • a plurality of individual nonconnected lengths 18 of flexible abrasive-coated material each extend through a different slot 20 in the hub assembly 12 and are positioned so that their outer projecting end portions project along the surfaces of adjacent ones of the brushes 16 that lead when the wheel 10 is rotated in the first direction so that the projecting end portions of the lengths 18 of abrasive material can be yieldably pressed into abrasive engagement with a flat or irregular surface by the brushes 16.
  • the lengths 18 of abrasive-coated material with which the wheel 10 is adapted to be used have scalloped edges 24.
  • the hub assembly 12 comprises a first portion 26 (best seen in Figures 2 and 4) and a second portion 28 (best seen in Figures 3 and 4) which together define a separate helical passageway 30 for each of the lengths 18 of abrasive-coated material, with each of the hub portions 26 or 28 defining a different edge of each of the passageways 30.
  • the portions 26 and 28 have lugs 32 ( Figures 2, 3 and 5) adjacent their peripheries adapted to engage between the scallops along the edges 24 of the lengths 18 of abrasive-coated material along the passageways 30, and are relatively axially movable between a lock position ( Figures 1 and 5) with the lugs 32 between the scallops to hold the lengths 18 of abrasive-coated material in the hub assembly 12, and a released position (not shown) spaced to afford free manual movement of the lengths 18 of abrasive-coated material in either direction along the passageways 30 past the lugs 32.
  • the sanding wheel 10 comprises means including a threaded portion 33 of the bolt 14 and a knurled nut 34 for releasably holding the hub portions 26 and 28 in the lock position which, together with the scalloped edges 24, relatively movable hub portions 26 and 28, and the lugs 32 provides the means for releasably securing the lengths 18 of abrasive-coated material within the hub assembly 12.
  • the first and second portions 26 and 28 of the hub assembly 12 are each generally cylindrical and are formed preferably by molding of a rigid polymeric material (e.g., A.B.S., polypropylene, or high impact styrene).
  • Each portion 26 or 28 has a circular end wall (36 and 38 respectively), from which end wall 36 or 38 project axially toward the other portion 26 or 28 spaced, matched guide walls defining therebetween halves of the passageways 30 leading to the slots 20, which passageways 30 are interleaved with each other and are helically disposed about the axis of the hub assembly 12.
  • the first portion 26 has a central through axially-extending opening 40 through which the bolt 14 projects and has a recess 41 around the opening 40 in its end wall 36 adapted to receive a head 42 on the bolt 14 to prevent rotation of the bolt 14 relative to the first portion 26.
  • the first portion 26 also includes a plurality of projecting channel-like parts 44 spaced around its periphery, which parts 44 are slotted through the peripheral surface 17 and are open at their distal ends to each receive (when the portions 26 and 28 are separated) a base 46 on one of the brushes 16 with bristles on the brush 16 projecting through a portion of the slot at the periphery 17 which is sufficiently narrow to preclude passage of the base 46 radially of the first portion 26.
  • the second portion 28 has walls defining a central opening 48 that will slide axially along the bolt 14, and has sockets adapted to receive the projecting parts 44 of the first portion 26 when the portion 26 and 28 are in their lock position so that the end wall 38 will close the distal ends of the brush 16 receiving channels in the projecting parts 44, and the portions 26 and 28 will be keyed together to prevent relative rotation of the portions 26 and 28.
  • Each portion 26 or 28 also has a slot or window 52 through its end wall 36 or 38 opening into each of the passageways 30 to afford a visual inspection to determine whether a significant amount of one of the lengths 18 of abrasive-coated material remains in the passageway 30.
  • the brushes 16 can include bristles of natural or polymeric materials, and are preferably formed of nylon bristles of a fairly large diameter (e.g., 0.015 inch or 0.038 cm) which have been found to provide a more effective and long-wearing support for the projecting portions of the lengths 18 of abrasive-coated material than natural bristles.
  • Each brush 16 is formed in a conventional manner by bending lengths of the bristles 180 degrees around a rod (not shown) and clamping a generally U-shaped clasp over the portions of the bristles extending around the rod to form the base 46 for the brush 16.
  • the lengths 18 of abrasive-coated material are longitudinally scored (see Figure 5) in a known manner so that their projecting portions supported on the brushes 16 can separate into longitudinal radially extending strips to help conform to an irregular surface.
  • the scalloped edges 24 on the lengths 18 of abrasive-coated material not only afford engagement by the lugs 32 to retain the lengths 18 of abrasive-coated material in place, but also restrict edge cutting of a workpiece by the abrasive-coated material, which is a known advantage of scalloped-edged abrasive as is described in U.S. Patent No. 2,637,956.
  • High- grade abrasive-coated material of any grit may be used in the wheel 10. Grits of 60 and coarser have been found to be particularly advantageous when used on metal surfaces as they have a tendency to peen as well as abrade the surface and provide surprisingly high removal rates.
  • a user simply engages the distal end of the bolt 14 with the chuck of a drive motor such as an electric drill, activates the drive motor, and applies the projecting portions of the lengths 18 of abrasive-coated material supported against the brushes 16 to a workpiece.
  • a drive motor such as an electric drill
  • the user loosens the knurled nut 34 which allows the portions 26 and 28 of the hub assembly 12 to separate to their released position by movement of the second portion 28 along the bolt 14 (which movement is aided by the influence of a coil spring 54 around the bolt 14 between the portions 26 and 28), whereupon the lugs 32 separate from the scalloped edges 24 of the lengths 18 of abrasive-coated material and allow them to be moved freely along the passageways 30 and through the slots 20 to reposition or change them as desired.
  • the nut 34 is then again tightened to move the portions 26 and 28 to their lock position with the lugs between the scallops along the edges 24, and the sanding wheel 10 is ready for further use.
  • Figure 6 illustrates a second alternate embodiment of a sanding wheel according to the present invention generally designated by the reference numeral 60.
  • the sanding wheel 60 comprises a cylindrical hub assembly 62 from which axially projects a shaft 64 having a distal portion adapted to be engaged and rotated by a drive motor (not shown) to rotate the sanding wheel 60 in a first direction indicated by an arrow in Figure 6.
  • a plurality of flexible support members or brushes 66 identical to the brushes 16, each have one end fixed on the hub assembly 62 by means similar to those used in the sanding wheel 10 and project generally radially outwardly of a cylindrical peripheral wall or periphery 67 of the hub assembly 62.
  • a plurality of individual nonconnected lengths 68 of flexible abrasive-coated material each extend through a different slot 70 in the periphery 67 of the hub assembly 62, and are positioned so that their outer projecting end portions project along the surfaces of adjacent ones of the brushes 66 that lead when the wheel 60 is rotated in the first direction so that the projecting end portions of the lengths 68 of abrasive-coated material can be yieldably pressed into abrasive engagement with a flat or irregular surface.
  • the hub assembly 62 also comprises first and second portions which define a separate helical passageway 80 for each of the lengths 68 of abrasive-coated material, with each of the hub portions defining a different edge of each of the passageways 80.
  • the portions of the hub assembly 62 can be more permanently fixed together as by screws (not shown) and the means for releasably securing the lengths 68 of abrasive-coated material in the hub assembly 62 comprises a plurality of self-locking cams 82.
  • Each cam 82 is mounted on a shaft 83 supported between the portions of the hub assembly 62 adjacent its periphery 67 for free rotation about an axis parallel to the axis of the hub assembly 62 between (1) a lock position with the periphery of the cam 82 pressing the lengths 68 of abrasive-coated material into engagement with a wall of the hub assembly 62 defining the passageway 80 for the length 68 of abrasive-coated material, and (2) a released position with the periphery of the cam 82 spaced from the length 68 of abrasive-coated material along that wall to permit movement of the length 68 of abrasive-coated material into or out of the passageway 80.
  • Each cam 82 is shaped and oriented so that friction between the length 68 of abrasive-coated material and the cam 82 when the length 68 is pulled from the hub assembly 62 through the passageway 80 will rotate the cam 82 toward its lock position. Thus centrifugal force or engagement with a workpiece will not throw or pull the lengths 68 of abrasive-coated material from the hub assembly 62.
  • the cams 82 can be rotated to their released positions by pushing the lengths 68 of abrasive-coated material into the passageways 80, however, and the cams 82 can then be manually held in their released positions so that the lengths 68 of abrasive-coated material can be freely pulled out of the passageways 80.
  • Figure 7 illustrates a third alternate embodiment of a sanding wheel according to the present invention generally designated by the reference numeral 90.
  • the sanding wheel 90 comprises a cylindrical hub assembly 92 which defines a separate helical passageway 94 for each of a plurality of lengths 96 of abrasive-coated material, from which hub assembly 92 axially projects a shaft (not shown) having a distal portion adapted to be engaged and rotated by a drive motor (not shown) to rotate the sanding wheel 90 in a first direction indicated by an arrow in Figure 7.
  • a plurality of flexible support members or brushes 98 identical to the brushes 16 each have one end supported on the hub assembly 92 and projecting generally radially outwardly of a cylindrical periphery 100 of the hub assembly 92.
  • the lengths 96 of flexible abrasive-coated material each extend through a different slot 102 through the peripheral wall or periphery 100 of the hub assembly 92, and are positioned so that their outer projecting end portions project along the surfaces of adjacent ones of the brushes 98 that lead when the wheel 90 is rotated in the first direction so that the outer end portions of the lengths 96 of abrasive-coated material can be yieldably pressed into abrasive engagement with a flat or irregular surface.
  • the means for releasably securing the lengths 96 of abrasive-coated material in the hub assembly 92 comprises a plurality of lock members 104 on which the brushes 98 are mounted.
  • the lock members 104 are mounted on the hub assembly 92 adjacent its periphery 100 for individual pivotal motion about an axis parallel to the axis of the hub assembly 92, between lock positions with lips 106 on the lock members 104 pressing the lengths 96 of abrasive-coated material into engagement with walls of the hub assembly 92 defining the passageways 94 for the lengths 96 of abrasive-coated material, and released positions with the lips 106 of the lock members 104 spaced from the lengths 96 of abrasive-coated material along the passageways 94 to permit individual movement of the length 96 of abrasive-coated material into or out of the passageways 94.
  • Leaf springs 108 are positioned between the lock members 104 and the hub assembly 92 to provide means for biasing the lock members 104 to their lock positions.
  • the lock members 104 can be individually manually pivoted to their released positions by pushing directly on the lock members 104 or on the brushes 98, however, and the lengths 96 of abrasive-coated material can then be moved into out of the passageways 94.
  • the lock members 104 are positioned so that the force applied to the brushes 98 when they are pressing the lengths 96 of abrasive-coated material against a workpiece will tend to also bias the lock members 104 to their lock positions.
  • the wheel may be adapted for attachment to an arbor attached to the rotor of a drive motor, or an arbor rotatably mounted on fixed supports as are commonly found in work shops; or the support members may be provided by flexible structures other than brushes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (8)

1. Sandpapierschleifscheibe, die zum Sandpapierschleifen von unregelmäßigen Flächen geeignet ist und eine Nabenanordnung (12, 62, 92) mit einer Achse besitzt, ferner einen die Achse umgebenden Mantel (17, 67, 100), in dem eine Mehrzahl von radialen Langlöchern (20, 70, 102) in der Umfangsrichtung in Abständen voneinander ausgebildet sind, und eine Einrichtung (14, 64), die derart an einen Antriebsmotor anstellbar ist, daß die Nabenanordnung in einer ersten Richtung um die Achse gedreht wird, ferner eine Mehrzahl von flexiblen Stützelementen (16, 66, 98), die am einen Ende an der Nabenanordnung befestigt sind und von dem Mantel allgemein radial auswärts vorspringen, und von denen jedes in nächster Nähe jener Seite eines der Langlöcher angeordnet ist, die bei einer Drehung der Nabenanordnung in der ersten Richtung die nachlaufende Seite ist; ferner eine Mehrzahl von voneinander getrennten, nicht miteinander verbundenen Längen aus einem schleifmittelüberzogenen, flexiblen Material (18, 68, 96), wobei sich jede dieser Längen durch eines der Langlöcher erstreckt und einen vorspringenden äußeren Endteil besitzt, der längs des benachbarten Stützelements vorspringt, und einen in der Nabenanordnung angeordneten, inneren Endteil, sowie voneinander getrennte Mittel (32, 82, 104), die im Bereich des Mantels der Nabenanordnung angeordnet sind und dazu dienen, je eine der Längen aus dem schleifmittelüberzogenen Material an der Nabenanordnung lösbar zu befestigen, dadurch gekennzeichnet, daß die Nabenanordnung (12, 62, 92) voneinander getrennte Kanäle (30) für die inneren Endteile der Längen (18, 68, 96) des schleifmittelüberzogenen Materials begrenzt, daß diese Kanäle (30) ineinandergreifen und die Achse wendelförmig umgeben, daß die voneinander getrennten und im Bereich des Umfanges der Nabenanordnung (18, 68, 96) angeordneten Mittel (32, 82, 104) zum lösbaren Befestigen je einer der voneinander getrennten Längen (18, 68, 96) im Freigabezustand nicht nur eine Abnahme und Wiederanbringung der einzelnen, voneinander getrennten Längen (18, 68, 96) aus dem schleifmittelüberzogenen Material sondern auch eine Einführung neuer Längen (18, 68, 96) aus dem schleifmittelüberzogenen Material in die voneinander getrennten wendelförmigen Durchlässe (30) ohne ein Auseinandernehmen der Nabenanordnung ermöglichen.
2. Sandpapierschleifscheibe (10) nach Anspruch 1, dadurch gekennzeichnet, daß die Längen (18) aus dem schleifmittelüberzogenen Material gezahnte Ränder (24) haben, daß die Nabenanordnung (12) einen ersten und einen zweiten Teil (26, 28) besitzt, die für jede der Längen (18) aus dem schleifmittelüberzogenen Material einen getrennten wendelförmigen Kanal (30) begrenzen, daß jeder der Nabenteile (26, 28) einen anderen Rand jedes dieser Kanäle (30) im Bereich des Mantels (17) bildet, daß die genannten Nabenteile (26, 28) im Bereich des Mantels (17) Lappen (32) besitzen, die im Bereich der Kanäle (30) an den Rändern (24) der Längen (18) aus dem schleifmittelüberzogenen Material zwischen den Zähnen derselben angreifen können, und eine axiale Relativbewegung zwischen einer Sperrstellung, in der die Lappen (32) an den Rändern (24) der Längen (18) aus dem schleifmittelüberzogenen Material in Zahnlücken derselben angreifen und sie in der Nabenanordnung (12) festlegen, und eine Freigabestellung ausführen können, in der sie derart abgerückt sind, daß sie eine Bewegung der Längen (18) aus dem schleifmittelüberzogenen Material längs der Kanäle (30) in beiden Richtungen an den Lappen (32) vorbei gestatten, und daß die Sandpapierschleifscheibe eine Einrichtung (14, 34) besitzt, die dazu dient, die Nabenteile (26, 28) in der Sperrstellung lösbar festzulegen und die zusammen mit den gezahnten Rändern (24), den relativbewegbaren Nabenteilen (26, 28) und den Lappen (32) die Mittel zum lösbaren Befestigen der Längen (18) aus dem schleifmittelüberzogenen Material an der Nabenanordnung (12) bilden.
3. Sandpapierschleifscheibe (10) nach Anspruch 2, dadurch gekennzeichnet, daß der erste Nabenteil (28) eine durchgehende zentrale Öffnung (48) besitzt, daß die Sandpapierschleifscheibe (10) eine Spindel (14) besitzt, die mit ihrem einen Ende an dem zweiten Nabenteil (26) koaxial befestigt ist und die durch die zentrale Öffnung (48) hindurch vorsteht und einen distalen Endteil besitzt, der die an einen Antriebsmotor anstellbaren Mittel bildet und im Bereich des genannten einen Endes einen gewindetragenden Teil (33) besitzt, ferner eine Mutter (34), die auf den gewindetragenden Teil (33) der Spindel (14) auf der dem zweiten Nabenteil (26) entgegengesetzten Seite des ersten Nabenteils (28) angeordnet ist, wobei die Spindel (14) und die Mutter (34) die Einrichtung bilden, die zum lösbaren Festlegen der Nabenteile (26, 28) in der Sperrstellung dient.
4. Sandpapierschleifscheibe (60) nach Anspruch 1, dadurch gekennzeichnet, daß die Einrichtung zum lösbaren Befestigen der Längen (68) aus dem schleifmittelüberzogenen Material im Bereich je einer der Langlöcher angeordnete Nockenscheiben (82) besitzt, die auf der Nabenanordnung im Bereich des Mantels (67) derselben frei um eine Achse drehbar gelagert sind, die zu der Achse der Nabenanordnung (62) parallel ist, daß die Nabenanordnung (62) gegenüber jeder der Nockenscheiben eine Wand besitzt, die teilweise einen Kanal (80) für den inneren Teil der das benachbarte Langloch durchsetzenden Länge (68) aus dem schleifmittelüberzogenen Material begrenzt, daß die Nockenscheibe (82) die Länge (68) aus dem schleifmittelüberzogenen Material gegen die benachbarte Wand preßt, und einer Freigabestellung drehbar ist, in der der Umfang der Nockenscheibe (68) im Bereich der benachbarten Wand von der Länge (68) aus dem schleifmittelüberzogenen Material abgerückt ist und eine freie Bewegung dieser Länge (68) aus dem schleifmittelüberzogenen Material in den oder aus dem Kanal (80) gestattet, und die Nockenscheibe (82) so geformt und orientiert ist, daß sie beim Herausziehen der Länge (68) aus dem schleifmittelüberzogenen Material äus dem Kanal (80) durch die Reibung zwischen dieser Länge und der Nockenscheibe (82) zu ihrer Sperrstellung hin gedreht wird.
5. Sandpapierschleifscheibe (90) nach Anspruch 1, dadurch gekennzeichnet, daß die Nabenanordnung (92) eine Mehrzahl von Sperrgliedern (104) besitzt, die je eine Lippe (106) haben und von denen jedes auf der Nabenanordnung (92) im Bereich des Mantels derselben um eine zu der Achse der Nabeanordnung (92) parallele Achse drehbar gelagert ist, daß die Nabenanordnung (92) gegenüber jedem der Sperrglieder eine Wand besitzt, die teilweise einen Kanal (94) für den inneren Teil einer der Längen (96) aus dem schleifmittelüberzogenen Material begrenzt, daß jedes der Sperrglieder (104) auf der Nabenanordnung derart schwenkbar gelagert ist, daß es zwischen einer Sperrstellung, in der die Lippe (106) des Sperrgliedes (104) die Länge (96) aus dem schleifmittelüberzogenen Material im Bereich des benachbarten Kanals (94) gegen die benachbarte Wand preßt, und einer Freigabestellung verschwenkbar ist, in der die Lippe (106) des Sperrgliedes (104) im Bereich der benachbarten Kanals (94) von der Länge (96) aus dem schleifmittelüberzogenen Material abgerückt ist und eine freie Bewegung der Länge (96) aus dem schleifmittelüberzogenen Material in den oder aus dem Kanal (94) gestattet, und daß die Nabenanordnung (92) eine Einrichtung (108) besitzt, die jedes der Sperrglieder (104) zu seiner Freigabestellung hin vorbelastet und die zusammen mit den schwenkbaren Sperrgliedern (104) und den Wänden die Einrichtung zum lösbaren Befestigen der Längen (96) aus dem schleifmittelüberzogenen Material an der Nabenanordnung (92) bildet.
6. Sandpapierschleifscheibe (10, 60, 90) nach Anspruch 1, 2, 3, 4 oder 5, dadurch gekennzeichnet, daß die flexiblen Stützelemente Bürsten (16, 66, 98) mit Nylonborsten sind, die von der Nabenanordnung (12, 62, 92) allgemein radial auswärts vorspringen.
7. Sandpapierschleifscheibe, die zum Sandpapierschleifen von unregelmäßigen Flächen geeignet ist und eine Nabenanordnung (12, 62, 92) mit einer Achse besitzt, ferner einen die Achse umgebenden Mantel (17, 67, 100), in dem eine Mehrzahl von radialen Langlöchern (20, 70, 102) in der Umfangsrichtung in Abständen voneinander ausgebildet sind, und eine Einrichtung (14, 64), die derart an einen Antriebsmotor anstellbar ist, daß die Nabenanordnung in einer ersten Richtung um die Achse gedreht wird, ferner eine Mehrzahl von Langen aus einem schleifmittelüberzogenen, flexiblen Material (18, 68, 96), wobei sich jede dieser Längen durch eines der Langlöcher erstreckt und einen vorspringenden äußeren Endteil besitzt, der längs des benachbarten Stützelements vorspringt, und einen in der Nabenanordnung angeordneten, inneren Endteil, sowie Mittel (32, 82, 104), die im Bereich des Mantels der Nabenanordnung angeordnet sind und dazu dienen, je eine der Längen aus dem schleifmittelüberzogenen Material an der Nabenanordnung lösbar zu befestigen, dadurch gekennzeichnet, daß die Längen (18) aus dem schleifmittelüberzogenen Material voneinander getrennt und nicht miteinander verbunden sind, daß die Nabenanordnung (12) einen ersten und einen zweiten Teil (26, 28) besitzt, die für jede der Längen (18) aus dem schleifmittelüberzogenen Material einen getrennten wendelförmigen Kanal (30) begrenzen, daß jeder der Nabenteile (26, 28) einen anderen Rand jedes dieser Kanäle (30) im Bereich des Mantels (17) bildet, daß die genannten Nabenteile (26, 28) im Bereich des Mantels (17) Lappen (32) besitzen, die im Bereich der Kanäle (30) an den Rändern (24) der Längen (18) aus dem schleifmittelüberzogenen Material zwischen den den Zähnen derselben angreifen können, und eine axiale Relativbewegung zwischen einer Sperrstellung, in der die Lappen (32) an den Rändern (24) der Längen (18) aus dem schleifmittelüberzogenen Material in Zahnlücken derselben angreifen und sie in der Nabenanordnung (12) festlegen, und einer Freigabestellung ausführen können, in der sie derart abgerückt sind, daß sie eine Bewegung der Längen (18) aus dem schleifmittelüberzogenen Material längs der Kanäle (30) in beiden Richtungen an den Lappen (32) vorbei gestatten, und daß die Sandpapierschleifscheibe eine Einrichtung (14, 34) besitzt, die dazu dient, die Nabenteile (26, 28) in der Sperrstellung lösbar festzulegen und die zusammen mit den gezahnten Rändern (24), den relativbewegbaren Nabenteilen (26,28) und den Lappen (32) die Mittel zum lösbaren Befestigen der Längen (18) aus dem schleifmittelüberzogenen Material an der Nabenanordnung (12) bilden.
8. Sandpapierschleifscheibe nach Anspruch 7, dadurch gekennzeichnet, daß der erste Nabenteil (28) eine durchgehende zentrale Öffnung (48) besitzt, daß die Sandpapierschleifscheibe (10) eine Spindel (14) besitzt, die mit ihrem einen Ende an dem zweiten Nabenteil (26) koaxial befestigt ist und die durch die zentrale Öffnung (48) hindurch vorsteht und einen distalen Endteil besitzt, der die an einen Antriebsmotor anstellbaren Mittel bildet und im Bereich des genannten einen Endes einen gewindetragenden Teil (33) besitzt, ferner eine Mutter (34), die auf den gewindetragenden Teil (33) der Spindel (14) auf der dem zweiten Nabenteil (26) entgegengesetzten Seite des ersten Nabenteils (28) angeordnet ist, wobei die Spindel (14) und die Mutter (34) die Einrichtung bilden, die zum lösbaren Festlegen der Nabenteile (26, 28) in der Sperrstellung dient.
EP82305273A 1981-10-09 1982-10-04 Schleifgerät Expired EP0077165B1 (de)

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FI67501C (fi) * 1983-09-05 1985-04-10 Kelo Puu I Haelikkae Co Sliptrumma
DK177274B1 (da) * 2011-05-27 2012-09-10 Flex Trim As Slibehoved
CN109015361A (zh) * 2018-09-10 2018-12-18 台山市远鹏研磨科技有限公司 一种金刚石不锈钢收光轮

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US2418966A (en) * 1944-11-23 1947-04-15 Teofil L Bonkowski Sanding drum
US2533612A (en) * 1948-08-14 1950-12-12 Manco Mfg Co Metal strip cutter
US2637956A (en) * 1952-03-28 1953-05-12 Minnesota Mining & Mfg Coated abrasive belt
US2713759A (en) * 1952-04-16 1955-07-26 Engis Equipment Company Rotary abrasive heads
US3132452A (en) * 1962-02-23 1964-05-12 Merit Products Inc Rotary abrasive device

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JPS5871074A (ja) 1983-04-27
ZA827392B (en) 1983-08-31
AU8922882A (en) 1983-04-14
DE3271946D1 (en) 1986-08-14
CA1193866A (en) 1985-09-24
EP0077165A1 (de) 1983-04-20
AU553030B2 (en) 1986-07-03

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